<?php
//第一步：判断验证是否有误
//第二步：验证格式
//第三步：验证大小
//第四步：验证是否是http上传
//第五步：上传实现

            header("content-type:text/html;charset=utf-8");
            echo "<pre>";
            print_r($_FILES);
            echo "</pre>";
            $count = count($_FILES['file']['name']);

            for ($i = 0; $i < $count; $i++) {
                $tmpfile = $_FILES['file']['tmp_name'][$i];
                $filefix = array_pop(explode(".", $_FILES['file']['name'][$i]));
                $dstfile = "uploads/files/".time()."_".mt_rand().".".$filefix;

                if (move_uploaded_file($tmpfile, $dstfile)) {
                    echo "<script>alert('succeed!');window.location.href='index_uploads.php';</script>";
                } else {
                    echo "<script>alert('fail!');window.location.href='index_uploads.php';</script>";
                }
            }
?>

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>index_uploads</title>
</head>
<body>
    <form action="uploads.php" method="post" enctype="multipart/form-data">
        <input type="file" name="file[]">
        <br>
        <input type="file" name="file[]">
        <br>
        <input type="submit" value="uploads">
    </form>
</body>
</html>